{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571117272",
    "entityType": "User",
    "nonce": "0x515e0d5ee9920512cb988678ce35c9db24a4eb5cb02185fdcc2a2e5b80af5785",
    "signature": "0x64341bdcce4606dd1d0c2275320e0b11c79feae1485edd43e7214506e2f6e6fc35957ec4dc239cdae368b01ae76f67f45502895c3b5aa9bca3fe72f1be5282cf1b",
    "signer": "0x38FE7a69e1e9EB0A072bab63456830393Bec98C4",
    "userId": "340353"
  }
}